Also, the terrain is notoriously difficult, the bridges have predetermined break points and places to put the dynamite (none there atm, but not so long ago ther

Also, the terrain is notoriously difficult, the bridges have predetermined break points and places to put the dynamite (none there atm, but not so long ago there was), and any old shed in the mountain could contain a bunker or hangar. Apart from Israel, Switzerland is the only country with enough bunkers for the whole population (even ABC rated I think).